Pipe-threading tool



A. JARMULOWSKY.

. PIPE THREADING TOOL.

A APPLXCATION FILED DEC. l5, 1920. L428,035.

M, |:Mm V ,uw i ,u N

wm @N A. IARIVIOLOWSKY.

PIPE THREADING TooL.

APPLICATION FILED -DEC. I5. 1920.

1,42835., Patentedsept. 5, 1922.

2 SHEETS-SHEET Z.

HM@ L ATTORNEYS Patented ASept. 5, 19.22.

'UN1TED STATES ABRAHAM JAnMoLowsKY,

0F BROOKLYN, NEW YORK.

PIPE-THBEADIN'G TOOL.

Application filed December To all whom t may concern Be it known that I, ABRAHAM JARMOLOW- SKY, a citizen of the United States, and a resident of the city -of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented anew and Improved 'Pipe-Threading Tool, of which the following is a full, clear, and exact description.

This invention relates to a tool, and has especial reference to one-which is used in connection with the reaming or threading of pipes, particularly short nipples or portions of pipes.

An object of the invention is tol provide a tool for gripping nipples or short portions of pipes whereby they may be easily threaded without placing them in a vise.

Another object resides in the provision 0f a tool which is adapted to grip portions of pipe or tubing to be threaded or treated and which can be quickly and easily operated to grip and release fthe articles.

A further object resides in the provision of a tool adapted for a plurality of'uses and which can be quickly and easily changed from a tool of one character into a tool of another character.

A still further object. resides in the particular Iconstruction and arrangement of parts hereinafter described and claimed and shown in the accompanying drawings.

The invention, in eneral, vcomprises a tool which can be place readily in a vise and which is provided with a plurality of griping surfaces adapted to receive small portions of piping and nipples to be threaded. By the simple, quick manipulation of an operating part connected with the tool, the portions to be treated are gripped so that they can be threaded or otherwise treated. Usually and heretofore it' has been a very complicated and laborious matter to thread small nipplesor pipe, since they have usually been placed in the vise and the lpart kept in the vise could not be threaded very readily. My invention provides means whereby the entire nipple can be threaded in one operation.

My device is also adapted, by the quick and simple substitution of certain parts, to be used as a reamer and as an internal pipe threader. v

15, 1920. serial No. 430,939.

The invention4 is illustrated in the drawin s, of whichigure 1 represents a side `elevation of the device;

Figure 2 represents a section taken on the line 2--2 of Figure 1',

Figure 3 represents a section taken on the line 3 3 of Figure 2; p Figure t is an end view of the device as viewed from the left of Figure l; Y

Figure 5 is an end view of the device as viewed from the right in Figure 1; A

Figure 6 is a perspective view of the operating collar; f

Figure 7 represents aperspective view of a reaming finger;

Figure 8 is a perspective view of a threadingdinger;

igure 9 is a partial side elevation of a modified form of tool; y

Figure 10 is an end' view ofthe device shown in Figure 9; and

Figures 11 and 12 represent modified forms of operating threads' which can beA Figure 2. In each of these slots 6 a finger` 7 is adapted to be disposed. At their inner ends the fingers are'provided with an ear portion 8 adapted to project into and engage la slot 9 disposed on the inner peripheral face of a ring-shaped collar 10 disposed around the body portion 1 adjacent the cylindrical surface 2. Each of the fingers 7 is provided with stepped surfaces 11, 12, 13 and 14 a1'- ranged to bev disposed parallel to and corresponding to the cylindrical surfaces 2, 3, 4 and 5 above mentioned'. The bottom surface 15 of each `of the fingers 7 lies along the bottoms of the slots 6. It will, therefore, be observed that when the collar 10 is operated to move backward or forward, the fingers 7 are moved backward and forward in the slots 6; and by reason of the slope'of l the slots, the diameter'between the corresponding outer faces11,12, 13 and 14 of oppositely disposed ngers is gradually increased as the fingers are drawn up the slots o. The surfaces 11, 12, 13 and 14- may be roughened so that, as shown in Figure 2, when anipple or small section of piping 16 is slipped over any portion of the lingers, such as 13, it will be gripped on the inner face thereof by. the roughened surface of the portion 13 on the linger 7 to holdA it. The body portion lmay be disposed or placed in a vise to firmly grip the entire tool, while a pipe-threading tool or apparatus is applied to the nipple 16. By this means the entire surface of the nipple 16 can be threaded in one operation.

ln order to move ,the collar backward and forward to increase or decrease the distance between the corresponding portions of the fingers 7, l provide two operatin iingers 1'? and 16 which extend along suitable slot portions 19 and 20 in the rear end of body portion 1. 'lhese fingers 17 and 13 are provided with upwardly turned ear portions 21 and 22'ada'p'ted to be disposed in the ab'ovesnentioned slot 9 in the collar 10. To

prevent the collar 10 from turning on the body portion 1, I may provide a screw 23 connecting the collar 10 with one of the ear portions, such as 21, to hold it from rotation on the body portion 1. The rear ends of tlc 17 and 13 are connected by screws /i and 25 to a bloclr 26, which is pro-u -d with an interiorly threaded bore 27 which a threaded portion 28 of an f shaft 29 passes. yllhe forward end shaft 29 is reduced in diameter ed with a threaded portion the v' ich is opposite to the pitch of the portion 26. rEhe operating shaft ovided with any suitable handle poris also provided with an aperwhich any suitable bar or auxiliary I ina-y be placed. To maintain 'the plug in .iignment, the fingers 17 and 18 are l to lie-in slotted portions 33 and 341 dinally disposed along the outer opposits faces ofthe plug 26.

ln order readily to insert the fingers 7 in the slot 9 of the collar 10, l provide a groove 35, shown particularly in Figure 6, through which the ear portions 8 of the fingers 7 may be introduced. rl`his introduction is e'ected by placing the collar in position on the body portion 1 and then rotating it until the slot 35 comes in line with the slot 6 in which the particular finger is to be placed. lThe finger is then placed in the slot 6 and moved up until the ear portion 8 passes through the 35 whereupon the collar 10 is rotated into position to register the slot 35 with another of the slots or grooves 6, whereby another finger may be placed in position. Similarly, `the operating fingers 17 and 18 can be introduced into engagement with the insecte collar 10 ina similar manner by reason of the slot 36 in the rearl portion of the collar p 10, shown in Figure 6 particularly.

The bod portion 1 may also be provided with suitalile threaded portions 37 and 38 into which suitable auxiliary handles may be placed when it is desired to move the body portion for purposes to be hereinafter described.- lt is apparent, of course, that the plurality of stepped cylindrical portions 2, 3, 4i and 5 and* the corresponding ste ped surfaces 11, 12, 13 and 14 of the fingers l) are provided to adapt the tool for use to` grip a plurality of nipples 16 of different internal diameters. When the shaft portion 29 is rotated in one direction, the plug 26 is moved to the left with respect to the body portion 1, thereby moving the lingers 17 and 18 which force the collar 10 to the left. rlhis collar in turn moves the fingers 7 to the left down the sloping surface of the slot 6, where.- by the diametrical distance between the corresponding portions of the linger 7 are decreased. A. reverse movement of-the shaft 29 will cause, in a manner clearly apparent, the movement of finger 7 to the right, as

4shown in Figure 2, to increase the abovementioned diametrical distance, whereby any suitable nipple, such as16, can be firmly gripped.

shown in Figure 7, the fingers 7 thereinfillustrated may beadapted to act as renner cutting edges instead of pipe grippers, i

y 8 l shew fingers 7" which may oe provided "3h thread-cutting teeth whereby an or thread may be cut on suitable pipe -we L forni of v pipe and larger j fingers 7" are made of heavier These fingers are to project beyond the ends of the Lety portion 1. `Because of the force to which-these {ing-ers are jected, means are provided to prevent their end portions from riding u in the slots 6. This means comprises eaded screws 29 whichare placed in Grooves in the ends of the body portion 1 adjacent the ends of the ngers 7 so' that the heads of the screws lie against corresponding cut-away groove portions 30 in a lateral face of each linger 7"', is shown in Figure 10, particularly, this engagement will errnit the longitudlnal movement of the lingers but not a lateral movement, the groove 30 being of suiicient length to permit the mechanism longitudinal movement of the fingers.

ln Figure 11 the portion 28" is shown with a thread of very large pitch, whereby a quick binding and releasingaction may be eidected,

Fi re 12 illustrates a threaded x ortion 28" in which a double thread is used).

If it 'is desired to use this tool to ream .in relation with the collar 10 and t e slots 6 and the tool is therebyadapted to lbe used as a reamer or thread cutter. On the other hand, the normal` use of the tool' resides Jin its use in a vise engaging the outer face of collar 10 whereby various sizes of short sections of pipes lor nipples may be firmly held on the body from the vise So that the entire threading of theseshort sections may be effected in one operation. y

It is, therefore, apparent that I have provided a simple, compact"` and eficient apparatus whereby a plurality of functions may be performed by thev one tool the various parts of which can be modiied in minor aspects without departing from thev spirit of the invention.

What I cla-im is:

1. A tool comprising a body portion'havin'g a plurality of slots therein, a plurality of lin er bars disposed in said slots, a collar slidableon the body "portion and. engaging one end of the fin er bars, said bod portion havingl a 'threa'ed bore@ a sha portlon separate having a threaded portion ada ted to ex` whereby the collar-an the linger bars-are moved with respect to the'` body portion.

2. A 'tool comprising a bod A'portion having a plurality of longitudineJ slots therein,

said slots being inclined to the axis of the body portion, a plurality of finger bars disposed in said slots, a plurality of 'step ed operating surfaces on said nger bars isposed parallel to the axis of thebody portion, a collar engaging one end ofthe fin r ba-rs, said body portion being provided with a threaded bore a shaft having a threaded portion,V adapted to engage said bore, anv

op ositely threaded portion on said shaft a lock engagin said oppositely threade portion, and llin connections between the block and the' collar, saidshaftadapted to 1 be rotated, whereby thev collar and/"finger barsare moved at will with respect'to the body portion. to vary. the distance' between the operating surfaces ,and the a'xls o the `-body portion as desired.

'ABRAHAM JARMoLowsKY. 

